Journal
JOURNAL OF CLIMATE
Volume 26, Issue 4, Pages 1268-1285Publisher
AMER METEOROLOGICAL SOC
DOI: 10.1175/JCLI-D-12-00057.1
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Based on analysis of a coupled model simulations with and without variability associated with the El Nino-Southern Oscillation (ENSO), it is demonstrated that knowing the current value of the ocean surface temperature-based index of the Pacific decadal oscillation (the OPDO index), and the corresponding atmospheric teleconnection pattern, does not add a predictive value for atmospheric anomalies in subsequent months. This is because although the OPDO index evolves on a slow time scale, it does not constrain the atmospheric variability in subsequent months, which retains its character of white noise stochastic variability and remains largely unpredictable. Further, the OPDO adds little to the atmospheric predictability originating from the tropical Pacific during ENSO years.
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